ECON Intermediate Macroeconomics (Professor Gordon) First Midterm Examination: Fall 2011 Answer sheet

Transcription

1 ECON Intermediate Macroeconomics (Professor Gordon) First Midterm Examination: Fall 2011 Answer sheet YOUR NAME: Circle the TA session you attend: Ofer 9AM 4PM Nuri 4PM Juan 9AM INSTRUCTIONS: 1. The exam lasts 1 hour. 2. The exam is worth 60 points in total: 30 points for the multiple choice questions and 30 points for the two analytical problems. 3. Write your answers for part A (the multiple choice section) in the blanks below. You won t get credit for circled answers in the multiple choice section. 4. Place all of your answers for part B in the space provided. 5. You must show your work for part B questions. There is no need to explain your answers for the multiple choice questions. 6. Good luck! PART A: Multiple Choice Problems Answer multiple choice questions in the space provided below. PLEASE USE CAPITAL LETTERS. 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) 13) 14) 15) 16) 17) 18) 19) 20) 21) 22) 23) 24) 25) 26) 27) 28) 29) 30) MC Q1 Q2 Total

2 PART A: Multiple Choice Problems 1) The inflation rate is the A) measure used to calculate the price level. B) measure used to calculate the cost of borrowing money. C) percentage increase in the average level of prices. D) percentage increase in the average level of wages. 2) The multiplier measures the A) number of steps it takes to move from one equilibrium to another. B) rise in saving resulting from a rise in income. C) marginal propensity to invest. D) rise in equilibrium GDP resulting from a one dollar rise in planned autonomous expenditures. 3) "Real money balances" refers to A) the currency part of the total money supply. B) the money supply divided by the price level. C) the money supply times one minus the interest rate. D) the non-interest-earning part of the money supply. 4) The average output produced per worker is one way of measuring A) inflation. B) the interest rate. C) employment. D) productivity. 5) Which of the following would shift the LM curve? A) an increase in the tax rate B) an increase in the real money supply C) a reduction in business confidence D) All of these.

3 6) The cars produced by Toyota (a Japanese company) in its factory in Kentucky in Japanese GDP. Distributed profits to Toyota s shareholders in Japanese GNP (assume that Toyota s owners are all Japanese). A) count, count B) count, do not count C) do not count, count D) do not count, do not count 7) If a the government of Country Z is running a budget deficit and net exports are zero, then A) investment is greater than saving. B) investment and saving are equal. C) saving is greater than investment. D) none of the above. 8) If real GDP for a given year is $2400 billion and nominal GDP is $2400 billion, A) this year is the base year for the GDP deflator. B) the GDP deflator for this year is C) the GDP deflator for this year is 0.8. D) the GDP deflator for this year is Answer: A 9) Help in financing our federal budget deficit comes from a amount of net exports, which is called. A) negative, net foreign investment. B) negative, foreign borrowing. C) positive, net foreign investment. D) positive, foreign borrowing. 10) Which of the following is not a reason why an increase in stock market wealth reduces the personal saving rate A) Autonomous consumption depends positively on real net worth B) Autonomous consumption depends negatively on the interest rate C) Higher stock prices generate capital gains D) Saving equals disposable income minus consumption

4 11) Which of the following statements would be true of an economy that can be characterized as being to the left of the IS curve? A) There will be a tendency for the level of output to decrease. B) There will be a tendency for interest rates to fall. C) There is an excess demand for commodities at the existing interest rate. D) There is an excess supply of commodities at the existing interest rate. 12) Over the past two decades, the ratio of European to US values are high for A) hours per capita. B) unemployment rate. C) real GDP per capita. D) labor-force participation rate. E) B and D. 13) In the IS-LM model, equilibrium income can be affected by A) monetary policy alone. B) fiscal policy alone. C) both fiscal and monetary policy. D) neither monetary nor fiscal policy 14) An increase in the money supply will A) decrease the quantity of money held. B) increase the quantity of money held. C) shift the LM curve leftward. D) None of the above. 15) Suppose that in producing a GDP of 3000, goods worth 200 go unsold and are unintentionally added to business inventories. These goods A) are not counted in total expenditure. B) are part of the investment component of expenditure. C) are nonetheless part of the consumption component of expenditure. D) are classified as net exports and are subtracted from total expenditures.

5 16) If disposable income increases by $100 and consumption increased by $85, ceteris paribus, we may conclude that A) the marginal propensity to consume is B) the marginal propensity to consume is C) $15 is autonomous consumption. D) a change in disposable income is induced by a change in consumption. Answer: A 17) The IS curve represents A) investment and saving when the commodity markets are in disequilibrium. B) equilibrium in the commodity markets for every combination of interest rates and output level. C) the determination of the level of interest rate. D) the determination of the level of income and output. 18) The article GDP Happiness criticizes GDP for which reason or reasons A) Including the value of household production B) Excluding the value of household production C) Including the construction of prisons and excluding the costs of crime D) Excluding the construction of prisons and including the costs of crime E) A) and D) F) B) and C) Answer: F 19) If Y = income, G = government spending, T = autonomous taxes, and t = income tax rate, then the government budget deficit can be expressed as A) G - T/Y(t). B) G - T. C) Y + G - T - ty. D) G - T - ty. 20) The IS curve shows that higher income levels require interest rates to ensure that income equals. A) higher, planned autonomous spending B) higher, planned expenditures C) lower, planned autonomous spending D) lower, planned expenditures

6 21) The size of the multiplier depends in part on the A) level of autonomous expenditures. B) change in autonomous consumption. C) level of consumption. D) marginal propensity to consume. 22) Which of the following is not a reason that the author of an article described America s 2011 consumers as zombies. A) High level of household debt B) Falling house prices C) Zero lower bound prevents Fed from reducing interest rate D) Slow real wage growth 23) The Economist summary of the link between financial crises and property busts makes which of these policy recommendations A) End tax deductibility of mortgage interest B) Enforce minimum down payment requirements C) Eliminate mortgage-backed securities D) A) and B) E) B) and C) 24) If the interest rate were to rise, we expect that A) autonomous expenditures will rise. B) the supply of money will fall. C) the amount of money people want to hold will rise. D) the amount of money people want to hold will fall. 25) The LM curve is the set of combinations of such that. A) interest rates and real money balances, real income equals real money balances times (1/r) B) interest rates and real money balances, the money supply is equally demanded C) real income and real money balances, the production of output is equally demanded D) real income and interest rates, the production of output is equally demanded E) real income and interest rates, the money supply is equally demanded Answer: E

7 26) A flat IS curve implies that A) an increase in money supply will change output by a relatively small amount. B) a decrease in taxes will change output by a relatively large amount. C) changes in money supply will have large multiplier effects on output. D) A and B. 27) Monetary policy loses its effectiveness in all of the following situations EXCEPT A) when the IS curve is vertical. B) when the LM curve is nearly horizontal. C) when interest rate controlled by the Fed reaches zero. D) when the IS curve is horizontal. 28) The "Big Three" concepts of Macroeconomics are A) profits, liquidity, and sustainability. B) unemployment rate, inflation, and economic growth. C) asset rebalancing, markups, and profitability. D) federal budget, foreign trade, and quantitative easing. 29) A crucial national income accounting identity has (S + T) equal to A) I + G - NX. B) I + G + F. C) I + NX. D) G + F. E) I + G + NX. Answer: E 30) The Economist applies the IS-LM model to answer which of these puzzles? A) Why long-term bond rates were low while short-term interest rates were rising B) Why long-term bond rates were high while short-term interest rates were falling C) Why the recession was so severe D) Why the recovery has been so weak Answer: A

8 PART B: Analytic Problems QUESTION 1 (10 points) An economy produces chairs and tables. In the following table, prices and production is listed for the years Using 2000 as the base year, for each year calculate nominal GDP, real GDP, the GDP deflator and inflation. Prices Chairs Tables Quantities 1. Chairs Tables Nominal GDP 3*2+5*2=16 5*2+4*5=30 7*4+7*3=49 Expenditure in Constant $ Previous Year Prices n/a 5*2+4*2=18 7*2+7*5=49 Current Year Prices Next Year Prices 3*2+5*5=31 5*4+4*3=32 n/a Real GDP index, Earlier Year=1 Current Year Prices as weights n/a 30/31= /32= Previous Year Prices as weights n/a 18/16= /30=1.633 Chain Weighted n/a Level of Real GDP (Base = 2000) 30/1.043= GDP Deflator 16/28.75= /47.44=1.032 Inflation Rate n/a 58.61% 3.22%

9 QUESTION 2 (20 points) Consider an economy described by the following equations: C = C a (Y-T), C a = r, I p = r, G = 3000, NX= Y, T = Y (M/P) d = 0.5*Y 24*r M s /P = 4760 (a) Using the above numbers: find autonomous planned spending at a zero interest rate, autonomous planned spending as a function of interest rate, the multiplier and the equation for the IS curve. (3 points) k=1/(0.25*(1-0.2) )=2 Ap = r -0.75* r = r Y= r (b) Derive the LM curve. (3 points) 0.5Y-24r=4760, so Y= r (c) Find the equilibrium values of income and interest rate. (2 points) r = r 248r = 1240 r=5 Y= *5=9760. If we use the IS instead, Y= *5=9760. (d) Calculate tax revenues, consumption (remember to include the effect of interest rate) and saving. What are the total leakages in this economy? Check your work by showing that it is equal to injections. (2 points) T = *9760 = 2712 C = *5+0.75*( ) = 7006 I = *5=1930 NX= *9760=-2176 Injections = =2754 Leakages = S+T=Y-C= =2754 (e) The government determines the desired level of income in the economy to be Y = The government decides to change autonomous net taxes in order to achieve this goal. How should autonomous net taxes be changed? (4 points) The LM curve does not change. Then Y=9880= r, so r=7.5. The new IS curve satisfies Y=9880=2*(Ap'-200*7.5)=2Ap' Thus Ap'=5690. Thus Ta must be reduced by enough to raise Ap by 310. Since c=0.75, Ta must be cut by -310/0.75 = The answer is ΔTa = Therefore, setting Ta= = will achieve the desired outcome. (f) Without calculating, in what direction do investment and net exports change? (2 points) Since r increases and Y increases, investment decreases and net exports decrease.

10 (g) Go back to the original values (without the changes in questions (e-f)). Suppose that the government determines the desired level of income in the economy to be Y = The government decides to change the money supply in order to achieve this goal. How should the money supply be changed? (4 points) The IS curve does not change. Then Y=9880= r, so r=4.4 The new LM curve satisfies M/P=0.5Y-24r=0.5* *4.4=4834.4